RF Flow Sensors
RF Flow Sensor Signal Conditioners
Flow Sensor Specifications
- Frequency range: to 5000 Hz (depending on target mass, air gap and velocity)
- Air Gap: Typically up to .130" for harsh environments, (.160" for epoxy-sealed high-sensitivity version)
- No magnetic drag flow meter sensors
- Detects a target through a substantial non-magnetic metal wall with no magnetic braking effect
- Detects passage of aluminum and, optionally, 316 stainless steel targets
- Reliable in oily, wet and harsh environments;
- Rugged shock and vibration resistant construction;
- Available in all popular standard and metric sizes
- Shell Material: 303 Stainless Steel; other materials available
RF Pickups - Flow Sensor
SPECTEC RF pickups are excellent flow sensors for applications that require near zero speed and zero magnetic drag sensing characteristics, such as turbine flow meters. SPECTEC RF (modulated carrier) sensors have a long history of use in turbine flow meters and turbine engines in the aerospace, petroleum, chemical, pharmaceutical and food industries.
These flow sensors have a wide variety of applications due to their ability to detect the usual magnetic or ferrous target and the passage of aluminum and 316 stainless steel targets.
These turbine speed sensors require a remote signal processor, such as the SPECTEC RF signal conditioner, that produces a 0-5 or 0-10 Vdc digital output, a frequency to voltage converter or a frequency to current signal converter.
SPECTEC's RF pickups are found in jet engines, the space station, high pressure installations, in dirty and oily installations in the oil fields around the world, as well as in moist, corrosive and electrically noisy environments.
For applications that require a sensor with an integral signal processor, SPECTEC also has a DIGISPEC digital RF speed sensor.
RF Pickup Applications:
Applications of RF pickups are: turbine flow meter sensors, especially low flow situations, and turbine engine speed sensors. These sensors are also used in detecting micro-motion in the textile industry, and bearing run-out detection.
The principle advantage of using the RF sensor technology is its ability to detect through a substantial non-magnetic metal wall without exerting a magnetic braking effect on the target. This attribute allows turbine meter rotors to spin freely, thus providing coverage of a much wider frequency range as compared to other sensing methods.